Product Introduction
Sintered diamond bandsaw blades carry a metal-bonded diamond layer on a high-tensile stainless steel backing. The diamond grit is fixed through sintering rather than electroplating, so the abrasive layer is thicker and continues to expose fresh diamond as the blade wears. Sipu produces these blades in widths from 10 mm to 80 mm, with continuous and segmented edge profiles, for cutting glass, ceramics, stone, sapphire and other hard-brittle materials.
Specifications
| Item | Range / Options |
| Backing material | High-tensile stainless steel |
| Diamond layer | Sintered metal bond |
| Width | 10–80 mm |
| Grit size | 35/40, 50/60 |
| Edge profile | Continuous, segmented |
| Blade form | Welded loop or coil |
| Loop length | Made to machine size |
| MOQ | 5 blades |
| Stock delivery | 48 hours for standard widths |
| Custom delivery | 7–14 working days |
Continuous edges are used where the cut surface matters most, such as glass, K9, quartz and ceramic. Segmented edges carry coolant and clear debris faster on stone, graphite and composite cuts. Both profiles run on standard band saw machines; loop length is set from the machine brand and wheel diameter you provide.
Construction and inspection
The steel backing is cleaned and tensioned before the diamond layer is applied. Sintering bonds the diamond grit into a metal matrix across the full working surface, not only at the surface. This matters when the blade is used on abrasive stone or ceramic: the bond wears gradually and keeps diamond exposed, so cutting speed stays more consistent through the life of the blade.
Sipu inspects width, backing thickness and edge profile on each production lot. A profile projector and image measuring instrument are used for dimensional checks, and sintered layer condition is logged against the batch. Blades are coiled, labelled and packed with anti-rust oil and VCI paper before leaving the factory.
Cutting applications
Glass and quartz: continuous edge, 50/60 grit for fine finish on K9, quartz glass and instrument glass.
Technical ceramics: continuous or segmented edge depending on wall thickness; 35/40 grit removes stock faster on zirconia and silicon carbide.
Stone: segmented edge on marble, granite and slate; 35/40 grit for general slab work.
Composites and graphite: segmented edge with coolant to control dust and heat.
Sapphire and other hard-brittle stock: continuous edge, 50/60 grit, low feed pressure.
Water or coolant is required on all sintered diamond blades. Dry running shortens bond life and can overheat the diamond layer.
FAQ
Q: How does a sintered diamond blade differ from an electroplated one at the purchase stage?
A: The sintered layer is thicker and holds diamond through the full bond depth. Electroplated blades have a single thin layer of grit. For production cutting of stone or ceramic, the sintered blade usually gives a longer working life between changes. For light or occasional cutting, electroplated remains a lower-cost option.
Q: Can I order a mixed trial pack?
A: Yes. The 5-blade minimum can include different widths, grits and edge profiles. State the material and machine for each blade so the loop length and edge profile are set correctly.
Q: What loop length should I specify?
A: Send the machine brand and model, or the wheel diameter and centre distance. Sipu calculates the loop length and confirms it before welding. If you already have a blade running on the machine, the old blade length can also be used as the reference.
Q: Do you supply coils for local welding?
A: Yes. Coils are available in the same widths and grits. Distributors who weld their own loops can order coil form to reduce freight volume and stock multiple machine sizes from one coil.
Q: How are the blades protected for sea freight?
A: Each blade is oiled, wrapped in VCI paper and vacuum-sealed. Boxes are packed into reinforced plywood crates. This packing is specified for 60 days or more of ocean transport without rust on the steel backing.
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